An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
Classification: Thrust ball bearings
NSN 4140-01-155-3101
NSN 6645-00-309-0447
NSN 6105-01-008-7896
NSN 5998-00-773-5175
NSN 5996-00-810-9486
NSN 5998-01-307-7457
NSN 5855-01-357-7907
NSN 5925-01-231-8802
NSN 6130-01-610-0614
NSN 6645-00-483-2981
NSN 6135-01-294-2131
NSN 6220-00-285-8104